1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
|
/*
* Copyright 2012 Red Hat Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: Ben Skeggs
*/
#include "nv04.h"
#include <core/gpuobj.h>
#define NV04_PDMA_SIZE (128 * 1024 * 1024)
#define NV04_PDMA_PAGE ( 4 * 1024)
/*******************************************************************************
* VM map/unmap callbacks
******************************************************************************/
static void
nv04_vm_map_sg(struct nvkm_vma *vma, struct nvkm_memory *pgt,
struct nvkm_mem *mem, u32 pte, u32 cnt, dma_addr_t *list)
{
pte = 0x00008 + (pte * 4);
nvkm_kmap(pgt);
while (cnt) {
u32 page = PAGE_SIZE / NV04_PDMA_PAGE;
u32 phys = (u32)*list++;
while (cnt && page--) {
nvkm_wo32(pgt, pte, phys | 3);
phys += NV04_PDMA_PAGE;
pte += 4;
cnt -= 1;
}
}
nvkm_done(pgt);
}
static void
nv04_vm_unmap(struct nvkm_vma *vma, struct nvkm_memory *pgt, u32 pte, u32 cnt)
{
pte = 0x00008 + (pte * 4);
nvkm_kmap(pgt);
while (cnt--) {
nvkm_wo32(pgt, pte, 0x00000000);
pte += 4;
}
nvkm_done(pgt);
}
static void
nv04_vm_flush(struct nvkm_vm *vm)
{
}
/*******************************************************************************
* MMU subdev
******************************************************************************/
static int
nv04_mmu_oneinit(struct nvkm_mmu *base)
{
struct nv04_mmu *mmu = nv04_mmu(base);
struct nvkm_device *device = mmu->base.subdev.device;
struct nvkm_memory *dma;
int ret;
ret = nvkm_vm_create(&mmu->base, 0, NV04_PDMA_SIZE, 0, 4096, NULL,
&mmu->vm);
if (ret)
return ret;
ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST,
(NV04_PDMA_SIZE / NV04_PDMA_PAGE) * 4 + 8,
16, true, &dma);
mmu->vm->pgt[0].mem[0] = dma;
mmu->vm->pgt[0].refcount[0] = 1;
if (ret)
return ret;
nvkm_kmap(dma);
nvkm_wo32(dma, 0x00000, 0x0002103d); /* PCI, RW, PT, !LN */
nvkm_wo32(dma, 0x00004, NV04_PDMA_SIZE - 1);
nvkm_done(dma);
return 0;
}
void *
nv04_mmu_dtor(struct nvkm_mmu *base)
{
struct nv04_mmu *mmu = nv04_mmu(base);
struct nvkm_device *device = mmu->base.subdev.device;
if (mmu->vm) {
nvkm_memory_del(&mmu->vm->pgt[0].mem[0]);
nvkm_vm_ref(NULL, &mmu->vm, NULL);
}
if (mmu->nullp) {
dma_free_coherent(device->dev, 16 * 1024,
mmu->nullp, mmu->null);
}
return mmu;
}
int
nv04_mmu_new_(const struct nvkm_mmu_func *func, struct nvkm_device *device,
int index, struct nvkm_mmu **pmmu)
{
struct nv04_mmu *mmu;
if (!(mmu = kzalloc(sizeof(*mmu), GFP_KERNEL)))
return -ENOMEM;
*pmmu = &mmu->base;
nvkm_mmu_ctor(func, device, index, &mmu->base);
return 0;
}
const struct nvkm_mmu_func
nv04_mmu = {
.oneinit = nv04_mmu_oneinit,
.dtor = nv04_mmu_dtor,
.limit = NV04_PDMA_SIZE,
.dma_bits = 32,
.pgt_bits = 32 - 12,
.spg_shift = 12,
.lpg_shift = 12,
.map_sg = nv04_vm_map_sg,
.unmap = nv04_vm_unmap,
.flush = nv04_vm_flush,
};
int
nv04_mmu_new(struct nvkm_device *device, int index, struct nvkm_mmu **pmmu)
{
return nv04_mmu_new_(&nv04_mmu, device, index, pmmu);
}
|
